Weft bobbin



R. e. TURNER Dec. 28, 1937.

WEFT BOBBIN Filed Dec. 16, 1935 Inven(.or Richavd GveeMe-ad' Turner Att urn Patented Dec. 28, 1937 awas PATENT OFFICE WEFT BOBBIN Richard Greenleaf Turner, Worcester, Mass, as-

signor to Crompton & Knowles Loom Works, Worcester, Mass, a corporation of Massachusetts Application December 16, 1935, Serial No. 54,649

Claims.

This invention relates to improvements in weft bobbins for carrying large capacities of yarn and it is the general object of the invention to form such a bobbin so that it may be wound on the 5 ordinary spindle winding machine and then if desired used in a spindle shuttle.

Heretofore it has been customary to make bobbins with round barrels so that the weft package is circular in cross section with a height equal to its width. It has been proposed heretofore to provide bobbins the barrels of which are so formed that the weft package in transverse cross section has a greater width than height to permit suchbobbins to be used in a loom without increasing the shed lines, thereby decreasing the number of weft replenishments necessary, either automatically or by hand. In such bobbins, however, the barrels have been formed of thin material, such as wood or plastic composition, and in order to attain requisite strength the barrels have been solid in cross section. As a result of this construction it has been necessary to wind the bobbins on a type of winder having a bobbin holder especially adapted to fit the butt of the bobbin and without the usual spindle. Many winding machines have a spindle which projects upwardly through the barrel of the usual bobbin, but in such machines it is not possible to wind bobbins having flattened solid barrels as heretofore constructed. It is an im portant object of my present invention to provide a bobbin the barrel of which shall be made of a pair of spaced members which within their over all outline. will approximate the end sectional dimensions ofthe flat barrel bobbin, but havethese parallel sections spaced so that the spindle of the ordinary winding machine may lie between them.

When used in shuttles flat bobbins as heretofore constructed have required a specialform of holder., Manynon-automatic shuttles are provided with a spindle hinged to the shuttle body and elevated to permit removal of an exhausted bobbin. The solid fiat bobbin barrels of the type heretofore constructed cannot be used. with a spindle type of shuttle, and it is a further object of my invention to adapt the weft carrying barrel for use with the ordinary spindle shuttle.

When the spindle of the ordinary shuttle is raised it moves the butt of the bobbin away from holding clips which are rigid with the shuttle and serve normally during weaving to prevent end play of the bobbin relatively to the spindle. It is another object of my present invention to modify the head of the bobbin to present guidingor positioning areas having a definite'relation with respect to the width of the weft package and form the clips or other part of the shuttle to cooperate with these areas in positioning the fiattened bobbin correctly in the shuttle so that the I gular displacement of the barrel relatively to the butt, and the rings will lie in the usual concentric grooves extending around the outside of the butt to prevent endwise movement of the barrel secured to said rings. By the provision of a flattened area on the bobbin butt the latter can be placed in the shuttle with the wires forming the barrel disposed in horizontal relation to thereby place the weft package with its width or long transverse dimension horizontal to extend into a previously unused part of the warp shed.

It is another object of my invention to form the tip end of the bobbin barrel with an eye integral with, or rigid with respect to the wire of which the barrel is formed, said eye to receive a spindle to help support the bobbin.

With these and other objects in View which will appear as the description proceeds, my invention resides in the combination of parts hereinafter set forth.

In the accompanying drawing, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a diagrammatic view showing a winding spindle having the preferred form of my approved bobbin applied thereto,

Fig. 2 is a section through a shuttle having the preferred or automatic form of my improved bob bin carried thereby and indicating diagrammatically the shed lines of the loom warp,

Fig. 3 is an enlarged detailed plan of the bobbin taken in the direction of arrow 3, Fig. 2,

Fig. i is an end elevation in the direction of arrow 4, Fig. 3,

Figs. 5 and6 are horizontal and vertical sections, respectively, on lines 55 and 6-45, respectively, of Fig. 4,

Fig. '7 is a transverse section on line 1-1 of Fig. 3,

Fig. 8 shows a modified form of bobbin butt, adapted for use with a spindle type shuttle,

Fig. 9 is a vertical transverse section on line 99 of Fig. 8,

Fig. 10 is a plan view taken in the direction of arrow ill, Fig. 9, and

Fig. 11 is an end view taken in the direction of arrow ll of Fig. 3.

In the description that follows I have shown my invention applied to automatic and non-automatic bobbins, the automatic bobbin being shown as the preferred form. As seen in Fig. l the winding spindle 29 may be rotatably mounted in frame 2| of the winding machine and have a tang 22 extending outwardly therefrom to support the bobbin. By means of a pulley. 23 the spindle is rotated and yarn feeding mechanism not shown supplies the weft to be wound on the bobbin as the spindle rotates. This spindle may be of the usual kind and of itself forms no part of my present invention.

The bobbin B comprises a spindle receiving head 25 which may be of wood or plastic composition and has mounted thereon the usual three space-d rings 25 to be receivedby spring clips 21 'in a shuttle 28. The shuttle is somewhat wider than those customarily employed. although its height will be of the usual dimension.

The head 25 may have a square outer butt 30 having upper and lower preferably flat parallel surfaces 3! and 32, respectively, see Fig. 4, which may assist in the transferring operation in a manner similar to that set forth in my co-pending application Serial No. 53,457, filed December 9, 1935. That part of the head extending to the right of the square butt end-as viewed in Fig. 3 may have parallel longitudinally extending opposite grooves 33 which extend under the rings to receive the holding ends 34 and 35 of a wire 36 having spaced weft supporting parallel strands 31. The latter. as shown in Fig. 3, are separated by a space 38 depending upon the desired width of the package of weft, said space being sufficient to receive the tang "22 of the winder. The ends 34 and 35 may be welded to the undersides of of the rings as indicated at 39 and the rings are received by peripheral grooves 29 one of which is indicated in Fig. 6 by removal of the corresponding ring. By this construction it will be seen that rotation of the rings about the butt is prevented by mutual cooperation of the ends 34 and 35 with the grooves 33, and that endwise movement of the wire 36 relatively to .the butt is prevented by the grooves 29. The wired structure is therefore held effectively in given angular relation with respect to the square butt 30, the line joining the two wires being preferably parallel to the surfaces 3i and 32, as indicated in Fig. 4.

The wire 35 is bent between the strands 3! to form a tip 40 having a loop 4! to provide a guide eye for a spindle, as shown in Fig. 11. The center of the eye 4| preferably lies on the axis of a spindle bore 42 in head 25 and parallel to strands 37.

The strands 3? may be bent .as at 48 if it is desired to have the space between those parts of the wires defining the weft carrying partof the bobbin of less width than the distance between ends 34 and 35.

Shuttle 28 has-a front wall 50 with a slot 5i to receive positive and negative electric weft detector prongs 52 and 53, respectively, which or dinarily are kept insulated from each other by a sufiicient mass of weft for continued weaving but which are 'electrically'connected by the front strand-3T, as shown in Fig. 3, when weft exhaustion approaches.

As shownin Fig. 4 the wire 36 and its strands 3'! define weft supporting structure having a Width considerably greater than its height so that the wound mass of weft W will be flattened on its upper and lower surfaces, but will have a width considerably greater to permit the winding of' an increased amount of Weft.

The modified form of the invention shown in Figs. 8, 9 and 10 relates to a bobbin adapted for use in a spindle type of non-automatic shuttle. As shown in Fig. 8 a shuttle 60 has a shuttle spindle 6| pivoted thereto as at 62 and can swing from the normal position parallel to the shuttle axis upwardly in usual manner to permit the removal of an exhausted bobbin and its replacement by one having a full weft supply. The modified bobbin may be as set forth in Figs. 9 and 10 and comprises a head 65 of plastic com- 7 position, such as a phenol condensation product,

having a cylindrical shoulder 66 and a butt 6'! the bottom surface of which may be flat as at 68. The top of the butt may also be flat so that in general outline its shape will conform to that in Fig. 9, this'construction permitting the bobbin to be inserted. I

Thebobbin barrel in this form may have a wire 70 with parallel strands H the left ends of which as indicated in Fig. 10 are bent and embedded in the head 65. The latter has a bore 14 which receives the. tang 2'2 and shuttle spindle 6i, and

disposed with its axis parallel to the strands .H

as in the preferred form. The tip of the modi fied bobbin is similar to that of the preferred form. 1 a

t is customary in shuttles of. the type illustrated in Fig. 8 to supplyretaining clips 15 having inbent ends 16 which lie to the right of some part of the head 65 as viewed in Fig. 8 for the purpose of preventing the bobbin from sliding endwise off the spindle 6| when the shuttle is checked. I retain this feature in the present instance, but in addition supply each clip with a floor '18 against which the corner 19 of the butt '67. rests, see Fig. 9. The aligned floors 18 positionthe lower surface '68 so that the bobbin is held with the wire strands II in substantially horizontal alignment for the purposes already described in connection with the preferred form of the invention.

From the foregoing it will be seen that I have provided .a simple form of bobbin so constructed that'the mass of weft carried thereby may have a width greater than the height and that the supporting parts of the bobbin which hold the mass of weft are such as to permit use with the usual winding or shuttle spindle. In both forms the tip end of the bobbin is formed to receive the end of. a spindle or tang 22 to avoid vibration in the winding operation.

Since the barrel is formed of metallic wire, the bobbin is readily adaptable to use with an electric weft detector. In the preferred form for automatic use the ordinary rings which hold the bobbin in the shuttle may be secured to the barrel formingwires as by welding, although I do not wish to be limited to this particular means of securing the butt ends of the barrel wire in fixed relation with respect to the head. In the modified form the shuttle carried bobbin retaining clips maybe formedso as to cooperate with parts of the bobbin head or butt to maintain the width of the weft mass parallel to the width of the shuttle, although I do not wish to be limited to accomplishing this'result necessarily by the use of clips 15. a 7

Having thus described my invention it will be seen that changes and modifications maybe made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a Weft bobbin to cooperate with a spindle, a head having a spindle bore therethrough, holding metallic rings supported by the head and extending around the bore, a pair of metallic wires extending into the rings and supported by and extending from the head in a direction substantially parallel to the bore axis and located on opposite sides of the latter, and means integral with said wire strands defining an eye concentric with the bore axis and located to receive a spindle. 2. In a Weft bobbin to cooperate with a spindle, a head having a spindle bore therethrough, holding metallic rings supported by the head and extending around the bore, a pair of spaced wire strands extending into the rings and located on opposite sides of the bore axis and fixed with respect to and projecting from the head, and means integral with the wire strands defining a spindle eye substantially concentric with the bore axis. 7

3. In a weft bobbin to cooperate with a spindle, a head having a spindle bore therethrough, metallic rings supported by the head and extending around the axis of the bore, and a pair of wire strands secured to the rings and extending from the head in a direction substantially parallel to the bore axis, said strands lying on opposite sides of the axis.

4. In a weft bobbin to cooperate with a spindle, a head having a spindle bore therethrough, holding rings supported by the head and extending around the bore and restrained against movement along the head in a direction parallel to the bore axis, and spaced elongated weft supporting elements extending into the rings and held against angular motion with respect to the head around the bore axis, the elements extending from the head substantially parallel to the bore axis.

5. In a Weft bobbin to cooperate with a spindle, a head having a spindle bore therethrough, holding metallic rings supported by the head and extending around the bore, a pair of spaced wire strands Welded to the rings and extending from the head in a direction substantially parallel to the axis of the bore, and means integral with the strands defining a spindle receiving eye substantially concentric with the axis of the bore.

6. Ina weft bobbin to cooperate with a spindle, a head having a spindle bore therethrough, holding rings supported by the head and extending around the bore, and spaced elongated weft supporting elements extending into the rings and held against angular motion relatively to the head around the bore axis, said elements extending from the head in a direction along the bore axis.

7. In a weft bobbin to cooperate with a spindle, a head having a spindle bore therethrough and having a flattened surface transverse of the bore axis and substantially parallel thereto, holding rings supported by the head and extending around the bore axis, and spaced elongated weft supporting elements extending into the rings and held against angular motion relatively to the head around the bore axis, said elements extending from the head in a direction along the bore axis, a transverse line joining said elements being substantially parallel to said surface.

3. In a weft bobbin to cooperate with a spindle, a head having a spindle bore therethrough,

metallic elements supported by and extending around the head, and a pair of metallic members connected to the elements and extending from the head in a direction along the axis of the bore, said members lying on opposite sides of the axis.

9. In a weft bobbin to cooperate with a spindle, a head having a spindle bore therethrough, metallic elements supported by and extending around the head, and a pair of metallic members connected to the elements and extending from the head in a direction along the axis of the bore, said members lying on opposite sides of the axis and being connected to each other at a point remote from the head.

10. In a weft bobbin to cooperate with a spindle and adapted for use in a bobbin changing loom, a head having a spindle bore therethrough and having a flattened area substantially parallel to the bore axis, metallic elements supported by and extending around the head, and.

a pair of elongated members connected to theelements and held against angular motion relatively to the head around the bore axis, said members extending in the direction of the bore axis and lying on opposite sides of said axis.

RICHARD GREENLEAF TURNER. 

